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FK free contour programming
Not all workpieces are dimensioned for
conventional NC programming. Thanks to
FK, the control’s free contour programming
feature, in such cases you simply type in
the known data—without fi rst having to
convert or calculate your data! It does not
matter if individual contour elements are
not completely defi ned as long as the
complete contour has been. If the given
data result in more than one mathematical
solution, the helpful TNC 640 programming
graphics present the possible variants for
your selection.
– Programming contours unconventionally
Lathe-specifi c contour elements
(option)
The TNC 640 provides special contour
elements to enable you to defi ne recesses
and undercuts. Axial or radial recesses can
be defi ned over the GRV (groove) function.
With the aid of dialog guidance and help
graphics, you use the proper parameters to
defi ne the desired recess.
Undercuts can be defi ned using the UDC
function. Here the forms E, F, H, K and U
are available as well as thread undercuts.
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